Archive for September, 2010

WHAT IS CCD?? A charge coupled device (CCD) camera is an apparatus which is designed to convert optical brightness into electrical amplitude signals using a plurality of CCDs, and then reproduce the image of a subject using the electric signals without time restriction. Charge coupled devices or CCDs are arrays of semiconductor gates formed on… Read more >>

WHAT IS IMAGE SENSOR: An image sensor is a semiconductor device that converts an optical image into electrical signals. A CMOS image sensor is a device that converts an optical image into electrical signals using MOS (metal oxide semiconductor) transistors. The CMOS image sensor sequentially detects electrical signals of each unit pixel in a switching… Read more >>

There are 2 broad categories of video formats. Some formats are meant for your finalized video and are called sharing formats. Other formats are used more in the beginning stages of a video project. They are good as raw video master clips. These formats will have higher resolution and larger file sizes than the sharing… Read more >>

Now a day over 166 million professionals worldwide, organizations use wireless technologies to solve business problems and create advantages over competitors. Wireless solutions are enabling remote or mobile workers (such as field sales, field service, manufacturing, and logistics personnel) to access information and business applications from more places. With respect to Security System wireless… Read more >>

When selecting a video surveillance system, we all need finest picture quality with huge storage in exchange of our money. There are following ten points which should be taken into account while selecting any 20th century CCTV cameras: 1. End Your Interlace Issues: Once you move to some Multilevel IP camera, you receive rid with… Read more >>

Top 3 Problems with Video Analytics CCTV system: • Eliminating false alerts • System maintenance too difficult • Cost of System too high Eliminating false alerts Since the goal of video analytics is to reduce or eliminate human involvement, eliminating false alerts is necessary to accomplish this. Each alert not only requires a human assessment… Read more >>

A smart card reader is an electronic device that reads smart cards. Access control card readers are used in physical security systems to read a credential that allows access through access control points, typically a locked door. An access control reader can be a magnetic stripe reader, a bar code reader, a proximity reader,… Read more >>

Compression and Data Management: As because megapixel cameras resolve so much detail, bandwidth usage and video storage can quickly become an issue. Both are dependant on the compression format used in the camera (Motion JPEG or MPEG-4 are two of the most common) and the frame rate at which the video is transmitted. Without going… Read more >>

Megapixel Cameras The improved clarity provided by megapixel cameras was first applied to broadcast applications when television stations started migrating from NTSC to HD (high definition). Poorly constructed sets and props such as fake bookcases with painted-in books didn’t cut it when shot with high-resolution HD cameras. In the video surveillance arena, the clarity and… Read more >>